Breast pump



FIG. 1 is a bottom view of a breast pump, according to one preferred embodiment of this invention;

FIG. 2 is a side view of the breast pump as shown in FIG. 1;

FIG. 3 is a top view of the breast pump as shown in FIG. 1;

FIG. 4 is a front view of the breast pump as shown in FIG. 1;

FIG. 5 is a side view, opposite the side view shown in FIG. 2, of the breast pump as shown in FIG. 1; and,

FIG. 6 is a rear view of the breast pump as shown in FIG. 1. 

The ornamental design for a breast pump, as shown. 